Emissions Question
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Emissions Question
Hello, I have a 1990 F250HD 4x4 w/351W(FI) and the ZF 5sp.
This vehicle is now a off-road vehicle only, no on-highway usage at all. My question is it still has all the emissions stuff on the engine, can someone please explain to me what I can take off and what has to stay, I know a lot about these engines but need help on this. Like unscrewing the hot air tubes that go into the exhaust manifolds and plugging the with pipe plugs or what.
and can I do this and still keep my check engine light off or will it always be on.
I saw a truck just like mine at the local garage getting a new EGR that was a electrical company truck that had all this taken off and the engine bay looks real clean, besides there are emissions sensors on my truck that are bad and I would rather do this to clean up the bay.
It is a strictly off road truck now,
and besides I am in Arkansas and there are no check anyway.
thanks,
Joel Thomas
1990 F250HD 4x4, 351w, ZF,
305/75/16BajaClaws.Ferndale,AR
This vehicle is now a off-road vehicle only, no on-highway usage at all. My question is it still has all the emissions stuff on the engine, can someone please explain to me what I can take off and what has to stay, I know a lot about these engines but need help on this. Like unscrewing the hot air tubes that go into the exhaust manifolds and plugging the with pipe plugs or what.
and can I do this and still keep my check engine light off or will it always be on.
I saw a truck just like mine at the local garage getting a new EGR that was a electrical company truck that had all this taken off and the engine bay looks real clean, besides there are emissions sensors on my truck that are bad and I would rather do this to clean up the bay.
It is a strictly off road truck now,
and besides I am in Arkansas and there are no check anyway.
thanks,
Joel Thomas
1990 F250HD 4x4, 351w, ZF,
305/75/16BajaClaws.Ferndale,AR
Senior User
Joined: Jun 2001
Posts: 293
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Emissions Question
UNPLUG STUFF UNTILL IT QUITS RUNNIN'. GET RID OF THE HP ROBBING
NOISE MAKING AIR PUMP FIRST. CAP OFF ALL THE AIR INJ. LINES.
GET RID OF THE CATCON PAST THE O2 SENSOR. THE O2 SENSOR HAS TO STAY HOOKED UP OF COURSE. YOU CAN ELIMINATE THE EGR VALVE AND
VAC LINE TO IT BY FABBING UP OR BUYING A PLATE FOR IT. IT'LL
RUN ROUGH USUALLY WHILE COLD.
AFTER A FEW YEARS CHARCOAL CANISTERS ARE USELESS. RAW GAS EATS
UP THE CHARCOAL.
IF YOU UNPLUG SOMETHIN' AND IT DON'T RUN RIGHT PLUG IT BACK UP.
IF IT RUNS RIGHT AND THE CHKENG LIGHT COMES ON, TAKE THE BULB OUT OF THE INS. PANNEL.
NOISE MAKING AIR PUMP FIRST. CAP OFF ALL THE AIR INJ. LINES.
GET RID OF THE CATCON PAST THE O2 SENSOR. THE O2 SENSOR HAS TO STAY HOOKED UP OF COURSE. YOU CAN ELIMINATE THE EGR VALVE AND
VAC LINE TO IT BY FABBING UP OR BUYING A PLATE FOR IT. IT'LL
RUN ROUGH USUALLY WHILE COLD.
AFTER A FEW YEARS CHARCOAL CANISTERS ARE USELESS. RAW GAS EATS
UP THE CHARCOAL.
IF YOU UNPLUG SOMETHIN' AND IT DON'T RUN RIGHT PLUG IT BACK UP.
IF IT RUNS RIGHT AND THE CHKENG LIGHT COMES ON, TAKE THE BULB OUT OF THE INS. PANNEL.
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